Corrosion and damage. You should read up on the minting process so you better understand what an error is and what it is not. If that’s what your collecting aims are.
Nope just 24 years of use. I should add - Welcome to CT Keep reading threads and you’ll learn a lot here. Tons of coins are posted and discussed here on a daily basis.
Awesome! I’m eager to learn! I have lots of questions and lots of cool looking Error coins I found over the years Thank you for the input!